Gridview只添加一个项目。但是我想要它添加两个项目。 [英] Gridview is only adding one item. However I want it to add both items.

问题描述

我的listbox2项是需要添加为列的项目。我正在使用一个按钮将列表框1中的项目添加到列表框2.因此，如果将listbox1项目x，y坐标添加到listbox2项目，那么我需要将列x，y坐标添加到gridview。如果listbox1项目纬度，经度被添加到listbox2然后我需要将列纬度，经度添加到gridview。但是，如果两个项目都从列表框1添加到列表框2，那么我想显示下面有行的列。代码如下：但是，我想添加在一个页面上选择的列表框，然后在另一个页面的网格视图中显示它。因此，我创建了一个全局变量类，它从listbox2.items.text中获取文本项并按如下所述添加它：

My listbox2 items are the items needed to be added as columns. i am using a button to add items from listbox1 to listbox 2. so lets say if listbox1 item x,y coordinate is added to listbox2 item then i need to add column x,y coordinate to the gridview. if listbox1 item latitude, longitude is added to listbox2 then i need to add column latitude, longitude to the gridview. however, if both of the items are added to listbox 2 from listbox 1 then i want to show both columns with rows underneath. the code is below: However, i want to add the listboxes selected on one page and then display it in a grid view on another page. Therefore i created a global variable class which takes the text item from the listbox2.items.text and adds it as explained below:

Dim dt As New DataTable    
    dt.Clear()
                For i As Integer = 0 To GlobalVariable.listbox2Count - 1
                    If GlobalVariable.containsListBox2Item = "X,Y Coordinate" Then
                        dt.Columns.Add("X Coordinate")
                        dt.Columns.Add("Y Coordinate")
                    ElseIf GlobalVariable.containsListBox2Item = "Latitude, Longitude" Then
                        dt.Columns.Add("Latitude")
                        dt.Columns.Add("Longitude")
                    End If
                Next
                Dim mr As DataRow
                mr = dt.NewRow
                If dt.Columns.Contains("X Coordinate") Then
                    mr("X Coordinate") = "100252"
                    mr("Y Coordinate") = "215120"
                Else
                    mr("Latitude") = "202030"
                    mr("Longitude") = "515123"
                End If
                dt.Rows.Add(mr)
                GridView1.DataSource = dt
                GridView1.DataBind()

我的gridview页面的模型如下：

My mockup for the gridview page is below:

<asp:GridView ID="GridView1" AutoGenerateColumns="true" runat="server" CellPadding="4" ForeColor="#333333" GridLines="None">
        <AlternatingRowStyle BackColor="White" ForeColor="#284775" />
        <EditRowStyle BackColor="#999999" />
        <FooterStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
        <HeaderStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
        <PagerStyle BackColor="#284775" ForeColor="White" HorizontalAlign="Center" />
        <RowStyle BackColor="#F7F6F3" ForeColor="#333333" />
        <SelectedRowStyle BackColor="#E2DED6" Font-Bold="True" ForeColor="#333333" />
        <SortedAscendingCellStyle BackColor="#E9E7E2" />
        <SortedAscendingHeaderStyle BackColor="#506C8C" />
        <SortedDescendingCellStyle BackColor="#FFFDF8" />
        <SortedDescendingHeaderStyle BackColor="#6F8DAE" />
    </asp:GridView>

我的公开课程如下：

My Public Class is Below:

public class GlobalVariable
        public shared listbox2Count = listbox2.items.count
        public shared containsListbox2Item
End Class

我的代码，我将文本项分配给变量对象：

my code where i assign a text item to a variable object:

Public Function getListBoxText()

If ListBox2.Text = "X,Y Coordinate" Then
    GlobalVariable.containsListBox2Item = "X,Y Coordinate"
ElseIf ListBox2.Text = "Latitude, Longitude" Then
    GlobalVariable.containsListBox2Item = "Latitude, Longitude"
Return Nothing
End Function

我尝试了什么：



i尝试谷歌搜索和调试对接断点，但只有一个项目添加。

What I have tried:

i tried googling and debugging butting break points but only one item adds.

推荐答案

这是因为ypu在IF和EL中添加了代码SE IF。因此，一个人将一次执行。删除ELSE IF并将其添加到IF。

That is because ypu have added codes in IF and ELSE IF. So, one will excute at a time. Remove ELSE IF and add it in a IF.

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